lighttpd forum migration > Problem with rewrite

Hello,
I have a problem with this rule. Can you translate this rule to lighttpd 
rewrite please?

RewriteCond %{REQUEST_URI} !^/index\.php
RewriteCond %{HTTP_HOST} !^www\.
RewriteCond %{HTTP_HOST} ^(.+)\.eldiariosindiario\.com
RewriteRule ^/tags/([a-zA-Z0-9]+)?/$ 
http://www.eldiariosindiario.com/tags/$1/    [R,L]

Thank you very much. Sorry for my poor English.